<template>
  <div>
    <div class="search">
      <input type="text" placeholder="输入城市名或拼音" class="search-input" v-model="keyword">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from "better-scroll"
  import { mapMutations } from 'vuex'

  export default {
    name: "CitySearch",
    props: {
      cities: Object
    },
    data() {
      return {
        keyword: '',
        list: [],
        timer: null
      }
    },
    methods: {
      handleCityClick(city) {
        this.changeCity(city);
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    computed: {
      hasNoData() {
        return !this.list.length;
      }
    },
    watch: {
      keyword() {
        if (this.timer) {
          clearTimeout(this.timer)
        }
        if (!this.keyword) {
          this.list = [];
          return
        }
        this.timer = setTimeout(() => {
          const result = [];
          for (let i in this.cities) {
            this.cities[i].forEach((v) => {
              if (v.spell.indexOf(this.keyword) > -1 || (v.name.indexOf(this.keyword) > -1)) {
                result.push(v)
              }
            })
          }
          this.list = result
        }, 100)
      }
    },
    mounted() {
      this.scroll = new Bscroll(this.$refs.search)
    }
  }
</script>

<style lang="less" scoped>
  @import "~styles/z.less";
  @import "~styles/varible.less";
  @import "~styles/mixins.less";

  .search {
    padding: 0 0.1rem;
    height: 0.72rem;
    .bgcolor(@bgcolor);
    .search-input {
      height: 0.62rem;
      line-height: 0.62rem;
      .w100;
      text-align: center;
      border-radius: 0.06rem;
      color: #666;
      padding: 0 0.1rem;
      box-sizing: border-box;
    }
  }

  .search-content {
    .abs;
    top: 1.58rem;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
    .bgcolor(#eee);
    .search-item {
      line-height: 0.62rem;
      padding-left: 0.2rem;
      color: #666;
      .bgcolor(#fff);
    }
  }
</style>
